Re: scheme-mode+auto-fill-mode minor bug

[Richard Stallman]

    PS: I'm less and less happy with the `whitespace' syntax-class because
        it's really not clear what it's supposed to stand for.  The absence of
        \n from that class in language where \n is a comment-ender is
        a common problem, and the presence of things like ' in that class
        (in Scheme mode until recently) or ~ (in TeX mode) bothers me.
        I think we need to clarify what we mean by `whitespace'.

We could add a flag for "single-char comment end".  Then \n can always
be whitespace.  That would eliminate most of the strangeness.

What Scheme mode did was just a mistake.

~ in TeX bothers me somewhat, but I think the idea is that TeX mode
should treat it like whitespace.